Get set for summer! Experts reveal 13 quick and easy tricks for looking flawless in your swimsuit.

FOR PERFECTLY HIGHLIGHTED, SHINY HAIR ...

A day in the sun may be fun for you, but it can be torture for your hair.

Try a keratin treatment. Jet Rhys, owner of the eponymous San Diego salon, explains this leaves locks smooth and frizz free for up to four months. If that's not an option, "nothing is more chic than tying a scarf around your head," she says. "Plus, it controls flyaways." Another one of her favorite 'dos? A side braid. Take this look into evening by undoing the braid, shaking out the waves, and setting them with Blow Blow Out Spray ($19.75).

Get beachy highlights. All of the top colorists are raving about L'Oréal Professionnel Inoa, a new ammonia-free, moisture-adding salon hair color. Says Rhys, "I used to advise clients to color less in the summer, but now I have Inoa." Just be sure to protect your investment. "UV rays and chlorine bleach out color and zap moisture," warns Rhys. She suggests spritzing in René Furterer Waterproof Moisturizing Fluid KPF 90 ($23) and pulling hair back into a sleek bun.

FOR A SLIMMER AND SMOOTHER BODY ...

Before bikini day creeps up on you, try these flattering fixes.

Boost your workout. By now you've seen women sporting FitFlops — we like FitFlop Walkstar 3 ($59.99) — the thick-soled flip-flops engineered to tone your legs and butt with every step. No, you won't wear them on a date. But you can certainly commit to wearing them on your daily commute. Teddy Bass, the trainer responsible for Cameron Diaz's fantastic physique, is a fan. "You work your legs to keep your balance in them," he says. His other easy stay-slim tip: Wearing your belt a bit tight will force you to pull in your abs.

Fight fuzz. Thought you were ineligible for laser hair removal? Think again. "We can now eliminate hair on any skin type or color," says New York dermatologist Gervaise Gerstner of the GentleMax laser. "The bikini area can take up to seven sessions, but hair grows back sparser." Cost: around $450 per session. Prefer to wax or shave? Banish ingrowns with a salicylic-acid-based lotion like Shaveworks the Cool Fix ($25).

Camouflage cellulite. Skeptical about cellulite creams? They really can temporarily tighten thighs, especially ones with caffeine, explains Gerstner. It takes about a week. We like Nivea Good-bye Cellulite Advanced Formula Gel-Cream ($13.49). "But," she warns, "you need to reapply to see results."

Play with color. A body bronzer like St. Tropez Wash Off Instant Glow Mousse ($22.50) can hide a multitude of flaws, especially on your tummy. "Skin looks better when it's darker," notes Osmond. And don't forget a highlighter. "Create the illusion of thinner limbs by applying it down your shins and the sides of your legs and arms," says Osmond. Try Benefit Bathina body balm ($28).